Rouging device for buffing wheels



Oct. 3l, 1939. R. MOON ROUGING DEVICE FOR BUFFING WHEELS Filed June 25,1938 PI-l 2 sheets-sheet 1 INVENTOR.

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oct. 31, 1939. C. R. MON 2,177,992 Y ROUGING DEVICE FOR BUFFING WHEELSFiled June 23, 1938 2 Sheets-Sheet 2 :rrr

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I N V EN TOR. Uff/WM5 i?. Mao/4 ATTORNEYS.

Patented Oct. 31, 1939k UNITED STATES PATENT OFFICE tario Manufacturinga corporation Company, Muncie, Ind.,

Application June 23, 1938, Serial No. 215,390

2 Claims.

This invention relates to a device for applying an abrasive, such asrouge, to a bufiing or polishing wheel, particularly wherein the rougeis in paste-like form.

rlhe object of the invention is to utilize a stick of paste-like rougeadapted to have its end projected against the peripheral bufng orpolishing surface of the wheel, and wherein the abrasive or stick ofrouge is periodically fed forward and applied to the wheelautomatically, preferably through air pressure.

More specifically the inventioncontemplates utilizing a cylindricalbarrel mounted radially with respect to the buiing wheel in which therouge stick is slidably mounted so that the end thereof may be broughtin effective engagement therewith, and applying air pressure to thecylinder in such manner that the vrouge will be alternately applied tothe wheel and retracted therefrom, and in its `applied position will berotated and fed forward step by step. Thus, the amount of rouge to beapplied may be governed by adjusting the extent of its forward movementin the barrel and the duration of its periodic application to the buingwheel.

The full nature of the invention will be understood from theaccompanying drawings and the following description and claims:

Fig. l is a side elevation of the rouge feeding device. Fig. 2 is asection taken on the line 2--2 of Fig. l. Fig. 3 is a section taken onthe line 33 of Fig. 2. Fig. 4 is an end elevation of the rouge feedingdevice. Fig. 5 is a section taken on the line 5-5 lof Fig. 4. A

1n the drawings there is shown a portion of a buhing wheel i!) which isusually formed of a plurality of cloth discs or laminations rotatablymounted upon a shaft Il and partially embraced by a housing l2 providedwith an opening I4 through which an abrasive, such as rouge, may beapplied to the peripheral buiing or polishing surface of the wheel.Supported upon the housing i2 by means of a bracket l5 there is apivctally mounted cylindrical barrel l1 having its open end directedtoward the opening M in close proximity to the wheel i9, and extendingradially therefrom. The barrel is provided with an inner rotative sleevei8 having longitudinal slots towards the forward end adapted toresiliently grip and slidably support the abrasive or rouge stick 2li,the end of which is adapted to frictionally engage the periphery of` thewheel for applying the rouge thereto,

Mounted at the rear of the barrel l1 there is a housing 2l removablysecured to the barrel by a collar 22. Extending axially through thehousinor and into the barrel there is provided a threaded rod 23'havinga disc plate 24 at the forward end thereof adapted to engage the rearend of the rouge stick for forcing it slidably rom the open end of thebarrel. Said rod is freely rotatable and slidable through a head 25mounted in the rear end of the barrel into which `the sleeve I3 issecured. The housing 2| encloses a ratchet wheel 26 having a boss 21through which the rod 23 extends and with respect to which it isslidably keyed so that it will revolve with the ratchet wheel but slideaxially relative thereto. Said rod is provided with screw threads so asto have threaded engagement with a split boss 28. Said boss is providedwith two arms pivotally connected at 29 to the outer end of the housing2|. The ends of the arms of the boss are clamped together bya member 3Bwhich locks them in their engaging position aboutthe rod 23.

Upon rotation of the rod 23 by action of the ratchet wheel 2&8, thescrew threads in the boss 23 moves the rod forwardly so that the plate24 forces the rouge 20 ,from the open end of the barrel into effectiveengagement with the buing wheel, said rod freely sliding through theboss 21 and head 25.

The ratchet wheel is rotated throughthe action of a pawl 3l and isengaged for preventing backlash by a spring pressed latch 32. The pawl3| is pivotally mounted upon a piston 33 and is spring pressed intoratchet engaging position by a spring and plunger 34. The piston 33operates in a cylinder 35 which is a continuation of the housing 2l, asillustrated in Fig. 2.

To operate the piston 33, there is mounted ed between the xed end of thecasing 3G and a ing an air chamber in communication with an air line 31.chamber by air passage through the air line 31 y forces the piston 33forwardly to cause the pawl 3l to partially rotate the ratchet wheel 26.The pawl is retracted by means of a spring 38 mounted between the iixedend of the casini 36 and a threaded collar 39. The collar 39 is threadedupon a piston rod A0 which is secured to the piston and extends into theair chamber. Thus, upon air being injected into the chamber the pistonmoves forwardly and upon release of the d air pressure the springretracts the piston.

The stroke of the piston may be adjusted by an adjusting screw 4Iextending through the end of the casing 36. The position of theadjusting screw determines the retracted position of the Air pressurecreated in said air ,A

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piston. When the piston is permitted to be retracted to a greaterextent, it will be subject to a longer stroke. Thus, within limits, theadjusting screw 4I may control the length of stroke cf the piston andthereby the extent of rotation of the ratchet wheel and rod 23,resulting in a more extensive movement of the rouge stick 20.

It is desirable to normally withdraw the rouge stick from engagementwith the bufng wheel, and to that end the barrel I1 and its associatedstructure above described is pivotally mounted to the supporting bracketat 42 so as to swing toward and away from the bufiing wheel. For causingsaid swinging movement there is fixedly mounted upon the bracket I acylinder 43 having communication with a branch 44 of the air line 31. Aplunger-like piston 45 is mounted within the cylinder 43 having itsouter end in engagement with a boss 46 secured by a bolt 41 to anexten-rV sion 48 of the barrel I1. On the other side of the boss 443there is a compression spring 49 held against movement by a .cup 50, asshown in Fig. 5.

Upon an impulse of air being discharged from the branch 44 into thecylinder 43, the piston 45 forces the boss 4S laterally, compressing thespring 49. Such lateral movement of the bess swings the rouge towardsthe bufiing wheel so that the effective end of the rouge stick is in theposition illustrated in full lines in Fig. l. Upon the air impulse beingdiscontinued and the pressure relieved in the cylinder 43, the tensionof the spring 43 forces the boss in the opposite direction, which forcesthe end of the rouge stick away from the bufng wheel, as shown by dottedlines in Fig. l. Thus, the rouge stick is held in contact with thebuiling wheel upon air pressure being exerted against the piston 45, butis retracted therefrom under tension of the spring 49.

In operation, it will be noted that the rouge stick 20 is sustained byair pressure against the buifing wheel ID for applying the rougethereto. Periodically air impulses are discharged through the air line31 simultaneously into the chamber 38 and cylinder 43 for actuating thepistons 33 and 45. The piston 45 will move the rouge stick intoengagement with the wheel and it will be simultaneously moved forward toa new position and rotated in the barrel I1 by the ratchet wheel 2G.Immediately thereafter the air pressure is released so that in its newlyfed position it is again retracted under spring tension from engagementwith the hurling wheel.

It will, therefore, be understood that through a suitable air valve,intermittent air impulses will be discharged through the air line whichwill result and a new stick of rouge inserted into the sleeve I8 toextend the full. length of the barrel I1.

The rotation or twisting of the rouge stick as it is applied to thewheel is advantageous in that it effects an even wearing of the appliedsurface of the stick. Such rotation or twisting is obviously eifected byreason of the fact that the stick is frictionally secured in the sleeveI8 which in turn is secured to the head 25, the head being rotated byreason of its screw connection with the boss 21 on the ratchet wheel 26.Thus, as the ratchet wheel is rotated, the sleeve I8 and the stick 20are rotated therewith.

The invention claimed is:

1. A device for automatically applying an abrasive stick to a bufling ora polishing wheel, comprising a barrel for slidably supporting saidstick mounted in position for the end of said stick to engage saidwheel, a ratchet actuated screw for slidably forcing said stick fromsaid barrel, a pawl for rotating said ratchet step by step, apneumatically actuated piston for operating said pawl, and means foradjusting the stroke of said piston for varying the extent of movementof said ratchet and stick upon each periodic movement of said piston.

2. A device for automatically applying an abrasive stick to a buiiing ora polishing wheel, comprising a barrel containing said stick, means forpivotally supporting said barrel end, a spring for normally maintainingsaid barrel and stick out of engagement with said wheel, a feed screw insaid barrel for engaging and feeding said stick forwardly therefrom, aratchet wheel for actuating said screw and rotating said stick, a pawlfor driving said ratchet wheel, a piston for actuating said pawl, meansfor adjusting the stroke of said piston and pawl for varying the feedingaction of said stick on each operation of said pawl, a piston for movingsaid stick and barrel about said pivotal mounting into engagement withsaid wheel, and pneumatic means for si multaneously actuating bothpistons.

CHARLES R. MOON.

